An Atlanta Falcons fan was stabbed in the neck during an altercation outside the Georgia Dome following Sunday’s NFC Championship Game, WSB-TV in Atlanta reported.

The victim, a 35-year-old male, was stabbed after punching a San Francisco 49ers fan, witnesses told WSB-TV. After being punched, the 49ers fan stabbed the Falcons fan in the throat area, according to the report.

The Falcons fan was transported to nearby Grady Hospital.

Georgia Dome spokesman Jason Kirksey emailed a statement to The Associated Press on Sunday saying an altercation occurred in a parking lot outside the dome at 6:40 p.m. ET.

The statement said the victim was in stable condition and that it is unclear “if anyone involved in the altercation attended the game.” Georgia Dome and Atlanta police “are investigating the incident.”

The 49ers defeated the Falcons 28-24 on Sunday to reach the Super Bowl for the first time in 18 years.